CODEWITHSUNDEEP
jsfjsf-2composite-component
Joxeja
Joxeja

Reputation: 43

Problems with actionListener of composite component

I am goin to explain a problem that I have when I use one composite component inside a template.

Imagine one view like this, that work with a generic managed bean with view scope. I pass it to the template as a parameter.

<?xml version='1.0' encoding='UTF-8' ?> 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
      "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
  xmlns:h="http://java.sun.com/jsf/html"  
  xmlns:f="http://java.sun.com/jsf/core"
  xmlns:ui="http://java.sun.com/jsf/facelets"
  xmlns:c="http://java.sun.com/jsp/jstl/core"
  xmlns:trkal="http://java.sun.com/jsf/composite/trkalcomponents">

  <ui:composition template="/template.xhtml">
      <ui:param name="maisuBean" value="#{genericBean}" />
  </ui:composition>
</html>

The template is like this. Beside other components, it also use one composite component.

<?xml version='1.0' encoding='UTF-8' ?> 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
      "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"  
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:c="http://java.sun.com/jsp/jstl/core"
    xmlns:trkal="http://java.sun.com/jsf/composite/trkalcomponents">

<h:head>
    <title>Titulo</title>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</h:head>

<h:body>
    <h:form enctype="multipart/form-data">
        ...
        <trkal:toolbarbuttonwidget id="buttonToolbar" label="Action" iconName="toolbar.png"
            buttonAction="#{maisuBean.myActionListener}"
            >
        </trkal:toolbarbuttonwidget>
        ...
        <h:commandLink id="otherButton" actionListener="#{maisuBean.myActionListener}">
            <h:graphicImage library="images" name="toolbar.png" />
            <h:outputText value="Other Action" />
        </h:commandLink>
        ...

    </h:form>
</h:body>
</html>

As you can see, this template use one composite components that allow specify the action listener that hear this event.

<composite:interface>
    <composite:attribute name="id" />
    <composite:attribute name="buttonAction" method-signature="void myAction(javax.faces.event.ActionEvent)" targetAttributeName="actionListener"/>
    <composite:attribute name="iconName" />
    <composite:attribute name="label"/>
    <composite:attribute name="title"/>
    <composite:attribute name="styleClass"/>
</composite:interface>
<composite:implementation>
    <h:outputStylesheet target="head" library="trkalcomponents" name="toolbarbuttonwidget.css"  />
    <h:commandLink id="buttonAction">
        <h:graphicImage library="images" name="#{cc.attrs.iconName}" />
        <h:outputText value="#{cc.attrs.label}" />
    </h:commandLink>
</composite:implementation>

If I click in otherButton, it work fine, but if I click in buttonToolbar it don't work.

09-nov-2012 19:16:28 javax.faces.event.MethodExpressionActionListener processAction
GRAVE: Se ha recibido 'javax.el.PropertyNotFoundException' al invocar la escucha de acción '#{maisuBean.myActionListener}' para el componente 'buttonAction'
09-nov-2012 19:16:28 javax.faces.event.MethodExpressionActionListener processAction
GRAVE: javax.el.PropertyNotFoundException: /template.xhtml @20,6 buttonAction="#{maisuBean.myActionListener}": Propiedad 'myActionListener' no hallada en el tipo com.joxeja.test.ToolBarBean
    at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:111)

It seem that it can't resolve the EL expression inside the composite component.

What is wrong? How can I use one composite componente inside one template?

I am using Mojarra 2.1.7

Thanks.

Upvotes: 0

Views: 2548

Answers (1)

Daniel B. Chapman
Daniel B. Chapman

Reputation: 4687

Sorry I missed this on the first read:

Your implementation isn't targeting the attributes properly. I made this mistake (as I'm pretty sure all of us do). You need to reference the attributes as -> #{cc.attrs.someAttribute} not by their name. You do this for most of the elements, but not the actionListener. If that is your code it should fix it. Your signatures are correct. You're trying to use the targetAttributeName which I'm not familiar with. My guess is you need to set the id of the component to that name (so your button would be myAction not actionListener (if I'm referencing the same example you are).

That aside, how I would do it is:

    <composite:interface>
    <composite:attribute name="id" />
    <!-- 
    <composite:attribute name="buttonAction" method-signature="void myAction(javax.faces.event.ActionEvent)" targetAttributeName="actionListener"/>
    -->
    <composite:attribute name="buttonAction" method-signature="void action(javax.faces.event.ActionEvent)"/>  
    <composite:attribute name="iconName" />
    <composite:attribute name="label"/>
    <composite:attribute name="title"/>
    <composite:attribute name="styleClass"/>
</composite:interface>
<composite:implementation>
    <h:outputStylesheet target="head" library="trkalcomponents" name="toolbarbuttonwidget.css"  />
        <!-- fix below -->
        <h:commandLink id="buttonAction" actionListener=#{cc.attrs.buttonAction}>
            <h:graphicImage library="images" name="#{cc.attrs.iconName}" />
            <h:outputText value="#{cc.attrs.label}" />
        </h:commandLink>
    </composite:implementation>

I like this method because it is similar to the rest of the way pages are marked up and it seems simple. Give it a shot.

Upvotes: 1

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